Getting ready to build engine /fuselage crutches . Dug out my Zap brand 30min epoxy and the resin part is nearly solid is it ok to heat it up in warm water to get it back into a viscus state?Then mix as per normal and use it or is it no good once it gets to this nearly solid state in the container? I keep the house at about 63* to save $, hope I haven't killed a nearly new bottle of epoxy.

Getting ready to build engine /fuselage crutches . Dug out my Zap brand 30min epoxy and the resin part is nearly solid is it ok to heat it up in warm water to get it back into a viscus state?Then mix as per normal and use it or is it no good once it gets to this nearly solid state in the container? I keep the house at about 63* to save $, hope I haven't killed a nearly new bottle of epoxy.

    It will probably be fine once you warm it up, but you definitely want it to cure at a normal or slightly elevated temperature, 63 won't cut it.

     Brett

Put the bottles in hot water for a while, that way you won't overheat them. When gluing, it's really worth the trouble to let it cure in elevated temperature (50..70C), especially with faster epoxies & hardwood. That way you'll end up with nearly 50% stronger seam.